VERTCRS["ODN Orkney height",
    VDATUM["Ordnance Datum Newlyn (Orkney Isles)"],
    CS[vertical,1],
        AXIS["gravity-related height (H)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Geodesy, engineering survey."],
        AREA["United Kingdom (UK) - Great Britain - Scotland - Orkney Islands onshore."],
        BBOX[58.72,-3.48,59.41,-2.34]],
    ID["EPSG",5740]]